Hi Dears,My customer used two kinds of debugger for MC56F84462.The one is USB-TAP for freescale and the other is U-Multilink for PEmicro.Sometimes my customer download the program using U-Multilink.but programming progress freezed immediately.So she changed debugger that USB-TAP for freescale. It did OK.She use Same target board , Same compiler and same program. But U-Multilink does not work. She want to know why U-Multilink freezing.The symptom is looks like normal but progress console appear progress bar on CW MCU v10.6.I have the screen shot figure but how to attach this file.

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Try changing the debug shift frequency within the debug configurations. My assumption is you are using Codewarrior 10.x. Right click on your project -> Debug as -> Debug configurations -> Edit connection. Try lowering the debug speed because DSC parts tend to be slower devices compared to other Freescale devices. See if this improves your situation.